
Age: 16
female
RK's acting career began on December 16, 2015 - less than 10 months before her first audition, screen-test and booking of movies and TV shows alike. On October 6th 2016, Show Creator Moira Walley-Beckett asked how long Ry had been acting to which her father replied, "Uh, like 15 minutes". The youngest of five children, Ryan Kiera Armstrong was born in New York City at the Beth Israel Hospital on March 10th 2010. Daughter to Dr. Berta Bacic and actor Dean Armstrong. "I would like to do something Daddy. Film me."

After the destruction of their home planet, Thundera, the ThunderCats—a group of cat-like humanoid aliens—escape aboard their flagship. Pursued by their enemies, the Mutants of Plun-Darr, they eventually crash-land on Third Earth. Lion-O, the Young Lord of the ThunderCats Born as the heir to Thundera, Lion-O was destined to wield the legendary Sword of Omens and lead his people. However, when the planet meets its tragic end, the young prince is thrust into an unexpected journey of survival. En route to Third Earth, his suspension capsule malfunctions—causing his body to mature into that of an adult while his mind remains that of a child. Now stranded on a foreign world, Lion-O must navigate the trials of leadership, forging his own path while still grappling with the recklessness and innocence of youth. Thankfully, his best friends WilyKit and WilyKat remain by his side, offering companionship and mischief along the way. Meanwhile, the seasoned warriors Cheetara, Panthro, and Tygra struggle to mold him into a worthy ruler while ensuring his survival against the ever-present threats of the Mutants of Plun-Darr.
